69791domain: NAppears in sequencesNumbers n such that sopfr(n) - (floor(sqrt(n))*bigomega(n)) = floor(sqrt(n)).at n=27A180877Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=13A318347